body{
    background-image: url(http://image.zhihuishu.com/user_project_ui/loginBg_5.jpg);
    background-repeat: no-repeat, repeat; 
}
button.two{
    width: 162;
    margin-top: 10px;
}
span{
   display: block;
    width: 325px;
    height: 50px;
    background: #4a8be9 ;
    text-align:center;
    line-height:50px;
    font-size: 33px;
    color: #fff;
    font-family: "黑体","宋体",sans-serif;
}
.login{
position: absolute;
top: 334px;
left: 50%;
margin-left: -171px;
}
#change-Passward{
    margin-left: 269px;
}